题目内容

The ozone layer is located in the _______________.

A. troposphere
B. stratosphere
C. mesosphere
D. thermophere

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_______________ region is the most western region in the Pacific.

A. Nino4
B. Nino3
C. Nino2
D. Nino1

____________________ is/are climate variation(s) in intraseasonal time scales.

A. ENSO
B. MJO
C. PDO
D. AMO

_____________________is a quasi-periodic oscillation of the easterlies and westerlies in the tropical stratosphere with a mean period of 28 to 29 months.

A. ENSO
B. MJO
C. AMO
D. QBO
E. NAO

The effects of global warming are being most keenly felt in the ______________ region, compared with the regions in other latitudes.

Arctic
B. mid-latitude
C. subtropical
D. tropical